DC-DC Buck Controller With Programmable LDO

The SC418 is a synchronous buck power supply controller. It features a bootstrap Switch and a programmable LDO in a space-saving MLPQ-3x3 (mm) 20-pin package. The device is highly ei cient and uses minimal PCB area. It uses pseudo-i xed frequency adaptive on-time operation to provide fast transient response. The SC418 supports using standard capacitor types such as electrolytic or special polymer in addition to ceramic, at switching frequencies up to 1MHz. The programmable frequency, synchronous operation, and programmable power-save provide high ei ciency operation over a wide load range. The LDO output is programmable from 0.75V to 5.25V using external resistors. The bias voltage for the device CAN be supplied by the on-chip LDO or by an external 3.3V or 5V supply. When a separate source is used as the bias supply, the LDO CAN be programmed to provide a dif er- ent voltage. By Semtech Corporation
SC418 's PackagesSC418 's pdf datasheet

SC418 Pinout, Pinouts
SC418 pinout,Pin out
This is one package pinout of SC418,If you need more pinouts please download SC418's pdf datasheet.

SC418 Application circuits
SC418 circuits
This is one application circuit of SC418,If you need more circuits,please download SC418's pdf datasheet.

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